Entropy variances of pure coherent states in the diffusion channel

doi:10.1088/1674-1056/ad5d97

中国物理B ›› 2024, Vol. 33 ›› Issue (9): 94202-094202.doi: 10.1088/1674-1056/ad5d97

Entropy variances of pure coherent states in the diffusion channel

Wei-Feng Wu(吴卫锋)^1,2,†, Yong Fang(方勇)¹, and Peng Fu(付鹏)¹

1 School of Mechanical and Electrical Engineering, Chizhou University, Chizhou 247000, China;
2 Anhui Research Center of Semiconductor Industry Generic Technology, Chizhou 247000, China

收稿日期:2024-05-25 修回日期:2024-06-24 接受日期:2024-07-02 出版日期:2024-09-15 发布日期:2024-08-27
通讯作者: Wei-Feng Wu E-mail:wfwu@mail.ustc.edu.cn
基金资助:
Project supported by Collaborative Innovation Project of University, Anhui Province (Grant No. GXXT-2022-088).

Entropy variances of pure coherent states in the diffusion channel

Wei-Feng Wu(吴卫锋)^1,2,†, Yong Fang(方勇)¹, and Peng Fu(付鹏)¹

1 School of Mechanical and Electrical Engineering, Chizhou University, Chizhou 247000, China;
2 Anhui Research Center of Semiconductor Industry Generic Technology, Chizhou 247000, China

Received:2024-05-25 Revised:2024-06-24 Accepted:2024-07-02 Online:2024-09-15 Published:2024-08-27
Contact: Wei-Feng Wu E-mail:wfwu@mail.ustc.edu.cn
Supported by:
Project supported by Collaborative Innovation Project of University, Anhui Province (Grant No. GXXT-2022-088).

摘要/Abstract

摘要： Using the operator correspondence of the real and fictious modes in the thermo entangled state representation, we solve the quantum master equation describing the diffusion channel and obtain the Kraus operator-sum representation of its analytical solution. we find that the pure coherent states evolve into the new mixed thermal superposed states in the diffusion channel. Also, we investigate the statistical properties of the initial coherent states and their entropy evolutions in the diffusion channel, and find that the entropy evolutions are only related to the decay time and without the amplitudes of the initial coherent states.

关键词: entangled state representation, diffusion channel, coherent state, entropy evolution

Abstract: Using the operator correspondence of the real and fictious modes in the thermo entangled state representation, we solve the quantum master equation describing the diffusion channel and obtain the Kraus operator-sum representation of its analytical solution. we find that the pure coherent states evolve into the new mixed thermal superposed states in the diffusion channel. Also, we investigate the statistical properties of the initial coherent states and their entropy evolutions in the diffusion channel, and find that the entropy evolutions are only related to the decay time and without the amplitudes of the initial coherent states.

Key words: entangled state representation, diffusion channel, coherent state, entropy evolution

中图分类号: (Quantum optics)

42.50.-p

03.65.-w (Quantum mechanics) 05.30.-d (Quantum statistical mechanics)

Wei-Feng Wu(吴卫锋), Yong Fang(方勇), and Peng Fu(付鹏). Entropy variances of pure coherent states in the diffusion channel[J]. 中国物理B, 2024, 33(9): 94202-094202.

Wei-Feng Wu(吴卫锋), Yong Fang(方勇), and Peng Fu(付鹏). Entropy variances of pure coherent states in the diffusion channel[J]. Chin. Phys. B, 2024, 33(9): 94202-094202.

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Entropy variances of pure coherent states in the diffusion channel

Entropy variances of pure coherent states in the diffusion channel

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